Added title to iframe videos (#5411)

This adds title attributes to all iframes that include videos. Fixes #5301
dart-lang · Dec 18, 2023 · cbfa713 · cbfa713
1 parent 90aa66a
commit cbfa713
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diff --git a/src/_includes/yt_shims.liquid b/src/_includes/yt_shims.liquid
@@ -0,0 +1,6 @@
+{% assign yt-set = 'frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen loading="lazy"' %}
+{% assign yt-set-short = 'frameborder="0" allowfullscreen loading="lazy"' %}
+{% assign yt-watch = 'https://www.youtube.com/watch' %}
+{% assign yt-embed = 'https://www.youtube.com/embed' %}
+{% assign yt-playlist = 'https://www.youtube.com/playlist?list=' %}
+{% assign yt-std-size = 'width="560" height="315"' %}
diff --git a/src/language/extension-methods.md b/src/language/extension-methods.md
@@ -9,19 +9,22 @@ nextpage:
   title: Callable objects
 ---
 
+{% include yt_shims.liquid %}
+
 Extension methods add functionality to existing libraries.
 You might use extension methods without even knowing it.
 For example, when you use code completion in an IDE,
 it suggests extension methods alongside regular methods.
 
-<iframe width="560" height="315"
-src="https://www.youtube.com/embed/D3j0OSfT9ZI"
-frameborder="0"
-allow="accelerometer; encrypted-media; gyroscope; picture-in-picture"
-allowfullscreen>
+If watching videos helps you learn,
+check out this overview of extension methods.
+
+<iframe
+  {{yt-std-size}}
+  title="Learn about extension methods in Dart"
+  src="{{yt-embed}}/D3j0OSfT9ZI"
+  {{yt-set}}>
 </iframe>
-_If you like to learn by watching videos,
-here's a good overview of extension methods._
 
 ## Overview
 

diff --git a/src/null-safety/migration-guide.md b/src/null-safety/migration-guide.md
@@ -3,6 +3,8 @@ title: Migrating to null safety
 description: How to move your existing Dart code to the world of null safety
 ---
 
+{% include yt_shims.liquid %}
+
 {{site.alert.version-note}}
   Dart 2.19 is the final release that supports null-safety migration,
   including the `dart migrate` tool.
@@ -36,9 +38,15 @@ Here are the basic steps for migrating each package that you own:
   make sure that all of your dependencies are ready.
 {{site.alert.end}}
 
-For an informal look at the experience of using the migration tool, watch this video:
+To get an informal look at the experience of using the migration tool,
+watch this video:
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/eBr5tlumwlg" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe
+  {{yt-std-size}}
+  title="Learn about the null-safety migration tool"
+  src="{{yt-embed}}/eBr5tlumwlg"
+  {{yt-set}}>
+</iframe>
 
 [null safety]: /null-safety
 [Gradual null safety migration for large Dart projects]: https://medium.com/dartlang/gradual-null-safety-migration-for-large-dart-projects-85acb10b64a9

diff --git a/src/resources/videos.md b/src/resources/videos.md
@@ -4,6 +4,8 @@ description: Learn by watching! Here's a collection of videos about Dart.
 dart-playlist-id: PLjxrf2q8roU0Net_g1NT5_vOO3s_FR02J
 ---
 
+{% include yt_shims.liquid %}
+
 Here are some videos about the Dart language and core libraries.
 For more videos, see the [Flutter video page.]({{site.flutter-docs}}/resources/videos)
 If you'd like other videos to be listed on this page,
@@ -19,6 +21,11 @@ A playlist of Google-produced videos,
 ranging from 5-minute talks on Dart asynchrony support
 to the Dart session from Google I/O 2019.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/videoseries?list={{page.dart-playlist-id}}" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
+<iframe
+  {{yt-std-size}}
+  title="Watch the talks on Dart asynchrony support"
+  src="{{yt-playlist}}{{page.dart-playlist-id}}"
+  {{yt-set}}>
+</iframe>
 
 [Playlist: Dart videos](https://www.youtube.com/playlist?list={{page.dart-playlist-id}})
diff --git a/src/tools/dart-fix.md b/src/tools/dart-fix.md
@@ -4,6 +4,8 @@ description: Command-line tool for applying analysis fixes and migrating API usa
 toc: false
 ---
 
+{% include yt_shims.liquid %}
+
 The `dart fix` command
 finds and fixes two types of issues:
 
@@ -16,14 +18,17 @@ finds and fixes two types of issues:
 
 {{site.alert.tip}}
   To learn about `dart fix` in a video format,
-  check out this deep dive on **Decoding Flutter**:
+  check out this [deep dive][] on **Decoding Flutter**:
+
+  <iframe
+    {{yt-std-size}}
+    src="{{yt-embed}}/OBIuSrg_Quo"
+    title="Learn how to use 'dart fix'"
+    {{yt-set}}>
+  </iframe>
+{{site.alert.end}}
 
-  <iframe width="560" height="315" 
-  src="https://www.youtube.com/embed/OBIuSrg_Quo" title="Using 'dart fix' YouTube video" 
-  frameborder="0" 
-  allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share"
-  allowfullscreen></iframe>
-{{site.alert.end}}  
+[deep dive]: {{yt-watch}}/OBIuSrg_Quo
 
 ## Usage
 
@@ -41,15 +46,15 @@ $ dart fix --apply
 
 ## Customization
 
-The `dart fix` command only applies fixes 
-when there is a "problem" identified by a diagnostic. 
+The `dart fix` command only applies fixes
+when there is a "problem" identified by a diagnostic.
 Some diagnostics, such as compilation errors, are implicitly enabled,
-while others, such as lints, must be explicitly enabled 
+while others, such as lints, must be explicitly enabled
 in the [analysis options file](/tools/analysis),
 as individual preferences for these vary.
 
 You can sometimes increase the number of fixes that can be applied
-by enabling additional lints. 
+by enabling additional lints.
 Note that not all diagnostics have associated fixes.
 
 ### Example
@@ -68,7 +73,7 @@ class Vector3d extends Vector2d {
 }
 ```
 
-Dart 2.17 introduced a new language feature called super initializers, 
+Dart 2.17 introduced a new language feature called super initializers,
 which allows you to write the constructor of `Vector3d`
 with a more compact style:
 

diff --git a/src/tools/pub/publishing.md b/src/tools/pub/publishing.md
@@ -3,6 +3,8 @@ title: Publishing packages
 description: Learn how to publish a Dart package to pub.dev.
 ---
 
+{% include yt_shims.liquid %}
+
 [The pub package manager][pub] isn't just for using other people's packages.
 It also allows you to share your packages with the world. If you have a useful
 project and you want others to be able to use it, use the `dart pub publish`
@@ -16,7 +18,12 @@ command.
 
 Watch the following video for an overview of building and publishing packages.
 
-<iframe width="560" height="315" src="https://www.youtube.com/embed/8V_TLiWszK0" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
+<iframe
+  {{yt-std-size}}
+  src="{{yt-embed}}/8V_TLiWszK0"
+  title="Learn how to build and publish Dart packages"
+  {{yt-set}}>
+</iframe>
 
 ## Publishing is forever